Avalue ARC-1209 - Manual (Page 12)

ARC-1209
12 ARC-1209 Quick Reference Guide
2.1 ARC-1209 connector mapping
2.1.1 Serial port 1 connector (COM1)
RS-485
Signal PIN PIN Signal
DATA- 1 6 NC
DATA+ 2 7 NC
NC 3 8 NC
NC 4 9 NC
GND 5
RS-232
Signal PIN PIN Signal
NDCDA# 1 6 NDSRA#
NRXDA 2 7 NRTSA#
NTXDA 3 8 NCTSA#
NDTRA# 4 9 NRIA#
GND 5
RS-422
Signal PIN PIN Signal
TxD- 1 6 NC
TxD+ 2 7 NC
RxD+ 3 8 NC
RxD- 4 9 NC
GND 5
2.1.2 Serial port 2 connector (COM2)
Signal PIN PIN Signal
NDCDB# 1 6 NDSRB#
NRXDB 2 7 NRTSB#
NTXDB 3 8 NCTSB#
NDTRB# 4 9 NRIB#
GND 5